83. It is no more surprising to see evil spirits obsess respectable persons than it is surprising to see evil persons persecuting good people. It is interesting that, ever since The Mediums' Book was published, obsessed mediums have become much less numerous, because, having been forewarned, they are on their guard and watch for the smallest signs that may betray the presence of a deceitful spirit. Most of the ones who are obsessed either did not study the subject first or did not heed the counsels offered to them.